Influence of pre-shearing upon extensional rheometry

Influence of pre-shearing upon extensional rheometry

Autori: J. Cruz-Mena, F. Calderas, E. Soto & B.Mena
Presentato al: TOP Times of Polymers
Anno: 2002
Volume: Unico - Issue: Unico
Casa Editrice:
Lingua: English

Abstract
A new type of shear-elongational rheometer capable of measuring the shear properties of polymeric solutions in a viscometric flow situation through a concentric cylindrical device and relating the results to simultaneous measurements on extensional flow has been described earlier by Gama and coworkers [1992]. The viscometric flow between concentric cylinders provides torque and first normal stress difference measurements, and imposes a viscometric pre-shearing history on the fluid. A suction device applied through an orifice at the bottom of the gap between the concentric cylinders provides a uniaxial extensional flow.

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XIX Italian Society of Rheology Conference

Bologna, 16th-19th June 2026
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The Italian Society of Rheology (SIR) organizes every two years the Italian Rheology Conference, which is the meeting point of the National and International rheological community to promote knowledge and discuss research in the field of rheology. The Conference consists of keynote lectures, oral communications and posters on topics related to all the thematic areas of rheology. The XIX edition will be held in the conference rooms of Plesso Belmeloro, in the city centre of Bologna, in June 16th-19th, 2026. Book your accommodation in Bologna well in advance, the city is a famous tourist destination and has limited availability of accommodations!

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